Fox heeft aangekondigd dat Michael Chiklis (The Shield, Fantastic Four) de rol van Gotham City Police Department Captain Nathaniel Barnes zal spelen in het tweede seizoen van Gotham. De producenten van de serie zeiden:“ [He] lands on the GCPD like a tornado, ripping out the dead wood of Gotham’s police force. He is a law and order zealot; unafraid of making enemies – on either side of the law. For Gordon (Ben McKenzie), Barnes is a hero and a mentor, someone with whom he can share the burden of heroism. Captain Barnes proves himself to be a strong ally to Gordon… but one day he will make an equally powerful enemy.”